1、 毕 业 设 计(论文) 题 目:光电式报警器 系 :信息工程系 专 业:应用电子技术 班 级: 学 生: 学 号: 指导教师: (保密) 职称:讲 师 摘 要 报警器的应用非常广泛。在汽车、摩托车报警器,仓库大门,以及家庭保安 系统中,几乎无一例外地使用了报警器电路。 本文设计了一种光电式报警器,该报警器通过感光器件把光信号转换成电信 号,控制数码管的显示以及报警电路。利用了部分数字逻辑电路,能在报警过程 中实现对应路数的显示功能。设计电路中用到了光耦、或门等元器件。该报警器 的设计采用模块化结构,有三个模块即光电转换模块、 数字显示模块以及声光报 警模块组成。各模块功能独立,可扩充性强,很
2、有经济利用价值。光电报警器的 使用简单,可靠性高,与传统的报警器相比较,光电报警器可应用的范围更加地 广泛,它可应用于传统报警器不能应用的范围,如火灾探测、煤气泄露报警、交 流电流越限报警、玻璃破碎探测等。 关键词:光耦;或门;光电转换;数字显示;声光报警 ABSTRACT Alarm is widely used in daily life. It almost without exception used the alarm circuit in the automotive, motorcycle alarm, warehouse doors and home security syst
3、ems. This article has designed a photoelectric alarm that through the light-sensitive device to convert light into electrical signals to control the digital display and alarm circuits. Using some of the digital logic circuits, it can correspond to large ones to achieve the alarm during the display.
4、Design circuit used in optical coupler and or gate component, and so on. The alarm was designed with modular structure. There are three modules that photoelectric conversion module and digital display module and the sound and light alarm module. The functions of each module are independent, and it has wonderful scalability and great economic value. Photoelectric alarms is used simply, and it high reliability. Compared to the traditional alarm, photoelectric alarm is more appli